Benchmark Alpha CD18S Installation And Servicing Instructions page 8

HORIZONTAL FLUE OPTIONS - L = 12 metres
max
L = B + C + 230 mm
L = B + C + E + 230 mm
B
B
C
C
E
B
F
E
C
L = B + E + F + 230 mm + (90° bend = 1.3 metre)
B
L = B + C + 230 mm + (2 x 45° bends = 1.8 metre)
VERTICAL FLUE OPTIONS
Fig. 3
Alpha CD18S/24S/30S - General Boiler Information 7